yesterday I upgraded the Linux version of a machine on which is installed an "Intensity Pro 4K" and I encountered some problems.

I upgraded to the latest Ubuntu LTS release: "Ubuntu 18.04 Bionic Beaver". (currently not included in the list of tested versions). At the same time I updated the blackmagic drivers to version 10.9.12a3

The card is detected by the system but it isn't possible to start capturing from the HDMI input, probably due a kernel error during driver loading. In the dmesg logs I found the message: